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Gamma-Ray Lines from Asymmetric Supernovae
Fryer, Chris L.; Hungerford, Aimee L.; Warren, Michael S.
We present three-dimensional smoothed particle hydrodynamics simulations of supernova explosions from 100 s to 1 yr after core bounce. By extending our modeling efforts to a three-dimensional hydrodynamics treatment, we are able to investigate the effects of explosion asymmetries on mixing and γ-ray line emergence in supernovae. A series of initia…
INTEGRAL and XMM-Newton Observations of the Weak Gamma-Ray Burst GRB 030227
Tiengo, A.; Götz, D.; Mereghetti, S. +16 more
We present International Gamma-Ray Astrophysical Laboratory (INTEGRAL) and XMM-Newton observations of the prompt γ-ray emission and the X-ray afterglow of GRB 030227, the first gamma-ray burst for which the quick localization obtained with the INTEGRAL Burst Alert System has led to the discovery of X-ray and optical afterglows. GRB 030227 had a du…